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  • ZTTO 11T MTB Bicycle Rear Derailleur Jockey Wheel Ceramic bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm5mm6mm

    ZTTO 11T MTB Bicycle Rear Derailleur Jockey Wheel Ceramic bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm5mm6mm

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    Product Code: ZTTO 11T MTB Bicycle Rear Derailleur Jockey Wheel Ceramic bearin
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    Product Description

    ZTTO Bicycle Rear Derailleur Ceramic bearing

    Pulley Jockey Wheel

       All the results of the simulations and the experimentations indicated that the ceramic ball bearings' performances are very good, especially in the low load and high-speed environment.

    Size:11T

    Structure: Ceramic bearing

    Material: aluminum alloy 7075

    Color:  Black Red Blue Silver Gold

    Weight: about 7.8g

    Fit for 4/5/6 MM roller screw axis

    Apply for most of rear derailleur on the market

    NEW 12T JOCKEY WHEEL ON SALE

    ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-GuideZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide (1)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide (2)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide (3)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide (4)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide.jpg_640x640 (1)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide.jpg_640x640 (2)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide.jpg_640x640 (3)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide.jpg_640x640 (4)ZTTO-11T-MTB-Bicycle-Rear-Derailleur-Jockey-Wheel-Ceramic-bearing-Pulley-AL7075-CNC-Road-Bike-Guide.jpg_640x640About ZTTO Premium Hybrid Ceramic Bearings

    ZTTO bearings feature rolling balls made of a ceramic material. The rolling balls are constructed of silicon nitride or zirconia ceramics.

    Using ceramic bearings in hubs, bottom brackets, and pulleys will reduce friction. By reducing the coefficient of friction, you can accelerate faster and maintain speed with less power input.

    Benefits of ceramic bearings:

    • Ceramic bearings have 10% less friction than steel bearings.
    • Bearings are extremely wear resistant because ceramic material is much harder than the hardest steel bearings.
    • Silicon nitride balls are 60% lighter than steel balls.
    • Safe operation even when using low amounts lubricant, which reduces the viscous drag friction from lubricant.
    • When used with special seals and lubrication, the friction in ceramic bearings can be 20-30 times lower than steel bearings with standard friction seals and standard lubrication.

    There are different types of ceramic bearings on the market, such as full ceramic bearings, steel ceramic bearings and nylon ceramic bearings. Full ceramic bearings make use of both ceramic balls and race. These bearings are impervious to corrosion and rarely require lubrication if at all. Due to the stiffness and hardness of the balls and race these bearings are noisy at high speeds. The stiffness of the ceramic makes these bearings brittle and liable to crack under load or impact. Because both ball and race are of similar hardness wear can lead to chipping at high speeds of both the balls and the race this can cause sparking. So, instead of the full ceramic bearings, the best solution for bicycle is hybrid bearings.

    ZTTO use hybrid ceramic bearings for high-end applications. Compared to all steel bearings, they have lower friction, lighter weight and longer service life. They are also less susceptible to failures caused by dirt, dust and poor lubrication.

     

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